prEN IEC 60034-12:2023
(Main)Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors
Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors
IEC 60034-12:2024 is available as IEC 60034-12:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60034-12:2024 specifies the parameters for eight designs of starting performance of single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with IEC 60034‑1 that: - have a rated voltage up to 1 000 V; - are intended for direct-on-line or star-delta starting; - are rated on the basis of duty type S1; - are constructed to any degree of protection as defined in IEC 60034-5 and explosion protection. This document also applies to dual voltage motors provided that the flux saturation level is the same for both voltages. This fourth edition cancels and replaces the third edition published in 2016. Aligned with the requirements for explosion protected motors from TC31 WG27 - new clause on methods for measuring locked-rotor current and torque; - new informative annex on the general current and torque characteristics with locked rotor; - new informative annex on correction of voltage and frequency; - aligned with the requirements for explosion protected motors from TC31 WG27.
Drehende elektrische Maschinen - Teil 12: Anlaufverhalten von Drehstrommotoren mit Käfigläufer ausgenommen polumschaltbare Motoren
Machines électriques tournantes - Partie 12: Caractéristiques de démarrage des moteurs triphasés à induction à cage à une seule vitesse
IEC 60034-12:2024 est disponible sous forme de IEC 60034-12:2024 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60034-12:2024 spécifie les paramètres de huit conceptions de caractéristiques de démarrage de moteurs triphasés à induction à cage à une seule vitesse fonctionnant à 50 Hz ou 60 Hz conformes à l'IEC 60034-1, qui: - ont des tensions assignées jusqu'à 1 000 V; - sont prévus pour démarrage direct ou étoile-triangle; - sont dimensionnés pour le service type S1; - peuvent avoir n'importe quel degré de protection tel qu'il est défini dans l'IEC 60034-5 et incluant les protections contre les explosions. Ce document s'applique également aux moteurs bitension à condition que le niveau de saturation du flux soit le même aux deux tensions. Cette quatrième édition annule et remplace la troisième édition parue en 2016. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - aligné sur les exigences du CE 31, GT 27, concernant les moteurs antidéflagrants; - nouvel article relatif aux méthodes de mesure du courant et du couple à rotor bloqué; - nouvelle annexe informative relative aux caractéristiques générales de courant et de couple à rotor bloqué; - nouvelle annexe informative relative à la correction de la tension et de la fréquence.
Električni rotacijski stroji - 12. del: Zagonska zmogljivost indukcijskih motorjev s trifazno kletko z eno hitrostjo
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Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2023
Električni rotacijski stroji - 12. del: Zagonska zmogljivost indukcijskih motorjev s
trifazno kletko z eno hitrostjo
Rotating electrical machines - Part 12: Starting performance of single-speed three-phase
cage induction motors
Drehende elektrische Maschinen - Teil 12: Anlaufverhalten von Drehstrommotoren mit
Käfigläufer ausgenommen polumschaltbare Motoren
Machines électriques tournantes - Partie 12: Caractéristiques de démarrage des moteurs
triphasés à induction à cage à une seule vitesse
Ta slovenski standard je istoveten z: prEN IEC 60034-12:2023
ICS:
29.160.30 Motorji Motors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
2/2132/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60034-12 ED4
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-04-28 2023-07-21
SUPERSEDES DOCUMENTS:
2/2107/CD, 2/2130/CC
IEC TC 2 : ROTATING MACHINERY
SECRETARIAT: SECRETARY:
United Kingdom Mr Charles Whitlock
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 9
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of CENELEC,
is drawn to the fact that this Committee Draft for Vote (CDV) is
submitted for parallel voting.
The CENELEC members are invited to vote through the CENELEC
online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of
• any relevant patent rights of which they are aware and to provide supporting documentation,
• any relevant “in some countries” clauses to be included should this proposal proceed. Recipients are reminded that the
enquiry stage is the final stage for submitting "in some countries" clauses. See AC/22/2007.
TITLE:
Rotating electrical machines – Part 12: Starting performance of single-speed three-phase cage induction motors
PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
− 2 − IEC CDV 60034-12 © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols . 7
5 Designation . 7
5.1 General . 7
5.2 Design N . 7
5.3 Design NE . 8
5.4 Designs NY and NEY . 8
5.5 Design H . 8
5.6 Design HE . 8
5.7 Designs HY and HEY . 8
6 Design N requirements . 8
6.1 Torque characteristics . 8
6.2 Locked rotor current and apparent power . 8
6.3 Starting requirements . 9
7 Design NE starting requirements . 9
8 Designs NY and NEY starting requirements . 9
9 Design H requirements . 9
9.1 Starting torque . 9
9.2 Locked rotor current and apparent power . 9
9.3 Starting requirements . 10
10 Design HE starting requirements . 10
11 Designs HY and HEY starting requirements . 10
12 Determination of current and torque from measurement. 10
12.1 Locked-rotor current and locked-rotor torque . 10
12.2 Breakdown torque . 10
12.3 Torque-speed curve and current-speed curve . 11
12.3.1 Torque-speed and current-speed curves from direct measurement
(method a) . 11
12.3.2 Torque-speed and current-speed curves from acceleration (method b) . 11
12.3.3 Torque-speed and current-speed curves from measured input power
(method c) . 12
12.4 Correction of data for tests performed at reduced voltage and/or other than
rated frequency . 12
Annex A Current and torque characteristics with locked rotor (informative) . 17
Annex B Correction method for test done on reduced voltage (informative) . 20
Table 1 – Minimum values of torques for design N . 13
Table 2 – Maximum values of locked rotor apparent power for designs N and H . 13
Table 3 – Maximum values of locked rotor apparent power for designs NE and HE . 13
Table 4 – External moment of inertia (J) . 14
Table 5 – Minimum values of torques for design H . 15
Table 6 – Minimum values of torques for design N motors with type of protection 'Ex eb –
increased safety' . 15
Table 7 – External moment of inertia (J) for motors with type of protection 'Ex eb –
increased safety' . 16
IEC CDV 60034-12 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ROTATING ELECTRICAL MACHINES –
Part 12: Starting performance of single-speed
three-phase cage induction motors
FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60034-12 has been prepared by IEC technical committee 2:
Rotating machinery.
This fourth edition cancels and replaces the second edition, published in 2016. It constitutes a
technical revision.
− 4 − IEC CDV 60034-12 © IEC 2023
The main technical changes with regard to the previous edition are as follows:
Clause or
Change
subclause
Table 6 Aligned with the requirements for explosion protected motors from TC31 WG27
12 New clause on methods for measuring locked-rotor current and torque
Annex A New informative annex on the general current and torque characteristics with locked rotor
Annex B New informative annex on correction of voltage and frequency
The text of this standard is based on the following documents:
CDV Report on voting
2/1789/CDV 2/1821A/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 60034 series, published under the general title Rotating electrical
machines, can be found on the IEC website.
NOTE A table of cross-references of all IEC TC 2 publications can be found in the IEC TC 2 dashboard on the
IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC CDV 60034-12 © IEC 2023 – 5 –
1 ROTATING ELECTRICAL MACHINES –
3 Part 12: Starting performance of single-speed
4 three-phase cage induction motors
8 1 Scope
9 This part of IEC 60034 specifies the parameters for eight designs of starting performance of
10 single-speed three-phase 50 Hz or 60 Hz cage induction motors in accordance with
11 IEC 60034-1 that:
12 – have a rated voltage up to 1 000 V;
13 – are intended for direct-on-line or star-delta starting;
14 – are rated on the basis of duty type S1;
15 – are constructed to any degree of protection as defined in IEC 60034-5 and explosion
16 protection.
17 This document also applies to dual voltage motors provided that the flux saturation level is the
18 same for both voltages.
19 The values of torque, apparent power and current given in this document are limiting values
20 (that is, minimum or maximum without tolerance).
21 NOTE 1 It is not expected that all manufacturers will produce machines for all eight designs. The selection of any
22 specific design in accordance with this document will be a ma
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